Upstream Provider Woes? Point the Ping of Blame - page 5

Network Admin's Best Tool

October 28, 2004

By
Carla Schroder

Presumably you have
contact information for your own service providers. What if you find a
problem, such as the Level3.net example, and you want to report
it? whois tells all. Use the -H flag to turn off the reams of annoying useless legalese:

$ whois -H level3.net

Though it may be that the WHOIS information is out-of-date or false, it's still the first place to look.

Resource

Network
Troubleshooting Tools by Joseph D. Sloan (O'Reilly, 2001), is a most worthy reference
book for all aspects of network troubleshooting: hardware, software,
and performance analysis.